Do you live in a city? Do you know how cities began? Long long ago, the world had only a few thousand people. These people moved from one place to another. They moved over the land, hunting animals for food. No one knows how or when these people learned about growing food. But when they did, their lives changed. They did not have to move houses any more. They could stay in one place and grow it. People began to live near each other, so the first village grew. Many people came to work in the villages, and these villages became larger and larger. Then people had machines, life in the villages changed again. People built factories. More and more people lived near the factories. So the villages grew into cities. Some of them grew very big. Today, it's strange that some people are moving back to small villages. Can you tell me why ?

    When we think summer, most of us think of fun in the outdoors. So it seems easy to lose weight over the summer. In fact, though, it's quite possible for us to put on weight. The good news is that we can avoid these problems if we know what to pay attention to.

    Here are some ways to keep summer weight away.

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    When we don't have a plan, it's easy to spend summer moving from bed to the computer. So it is necessary to make a work or study plan, like learning a new skill or working at a job.

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    Because we don't have to go to school, it's easy to sleep late, watch too much TV and eat more snakes as usual. So it's necessary to make sure your summer days follow a schedule—getting up at the same time each day and eating meals as usual times.

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    Whenever you're free, find something special to do, like making a dinner for your family. But remember: limit your screen time, no more than two hours a day.

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    If it's too hot outside or you don't like going to a gym, you can do you exercise indoors. If you love being outdoors, try swimming, running or playing soccer in the early morning or evening. Anyway, don't let the heat stop your exercise plans.

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    Don't eat too much meat. Choose some fresh fruit. It's better to put your focus on talking with your family and friends, not on food. Also, don't eat too many frozen things like ice cream.

A. Beat the heat       B. Make a work or study plan         

C. Think about what to eat     D. Stay busy         

E. Put everything in a schedule

    Much meaning can be carried clearly with our eyes，so it is often said that eyes can speak. Do you have such kind of experience? On a bus you may look at a stranger, but not too long. And if he finds that he is being looked at, he may feel uncomfortable. It's the same in daily life. If you are looked at for more than necessary, you will look yourself up and down, to see if there is something wrong with you. If nothing goes wrong, you will feel angry toward the person who is looking at you that way. Eyes do speak, right?

    Looking too long at someone may seem to be impolite. But sometimes things are different. If a man looks at a woman for more than 10 seconds, it may mean that he wishes to attract her attention, and to make her understand that he loves her. When two people are in a conversation, the speaker will only look at the listener from time to time, in order to make sure that the listener does pay attention to what he or she is saying. Lovers will enjoy looking at each other or being looked at for a long time, to show something that words cannot express.

    Clearly，eye contact(接触)should be done according to the relationship between two people and the place where you stay.